James d



(No Mode1.)

} A J. D-.- BAKER. MEANS FOR PREVENTING SPREADING OF FIRE THROUGH BUILDINGS.

Patented-Feb..'12', 1895.

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A UNITED STATES PATENT OFFICE.

JAMES D. BAKER, OF MONTREAL, CANADA.

MEANS FOR PREVENTING S PREADl NG JF FIRE THROUGH BUILDINGS.

SPECIFICATION forming part of Letters'latent No. 533,856, dated February 12, 1895.

Application filed November 5,1894. Serial No. 527,985. (No model.)

To all whom it may concern:

Be it known that 1, JAMES DAY BAKER, of .the city of Montreal, in the district of Montreal and Province of Quebec, Canada, have invented certain new and useful Improvements in Means for Preventing Spreading of Fire Through Buildings; and I do hereby declare that the following isa full, clear, and exact description of the same. 1

This invention has for its object to prevent the spread of fire throughout buildings, containing hollow walls or wooden partitions composed chiefiy of vertical studding, which studding when covered on the outside by the usual lath and plaster or plaster board has the effect of forming dangerous fiues through which the fire is rapidly spread.

The invention consists in lining the inside surfaces of the studding with plaster board or like fire resisting material and also in arranging lengths of the same material transversely between the studs so as to obstruct the vertical flue producing space thus preventing draft therethrough.

For full comprehension however of the invention, reference must be had tothe annexed drawings forming a part of this specification, in which like symbolsindicate corresponding parts, and Wherein Figure I is avertical elevation of a partition with plaster board'facing broken away to disclose the studding audits protecting covering; Fig.2, a vertical sectionvof same on line as as Fig. 1, and Fig. 3, a horizontal section of same on line Z Z Fig. 1, Fig. 4 being a detail view showing the edges of the. lengths beveled or mortised to interlock.

a a are the vertical wood studs of a partition, and bthe usual sheets of plaster board covering for the outside surfaces of same.

' c are lengths of plaster board of the same width as the inside faces of the studs and adapted to be set oversuch faces to cover same, while d are lengths of the same fire reif desired, either beveled or mortised so that when brought together vertical lengths can be held in place without any necessity for nailing to hold them in position. p

Besides preventing the spread of tire through the vertical flue space, it will also be apparent that the transverse obstructing lengths will interfere with the freedom of rats andlike vermin through the hollow walls of a building.

What I claim is as follows:

V 1. As a means for preventing the spread of fire through buildings, the combination with the studding of the hollow walls thereof, of plain fiat lengths of fire resisting material applied directly to the inside faces of such-studdin .2? As a means forpreventing the spread of fire through buildings having hollow walls, plain fiat sections or lengths of plasterboard disposed transversely of the hollow spaces in transverse lengths of the same material extending between the vertical studs and havingtheir ends inserted between the ends of the vertical lengths for the purpose set forth.

4. As a means for preventing the spread of fire through buildings having hollow walls, the combination with the combustible vertical studding thereof, of the plain fiat vertical lengths e and the plain fiat transverse lengths d of plaster board arranged substantially as described.

5. Asa means for preventing the spread of fire through buildings having hollow walls, the combination with the combustible vertical studding thereof, of the Vertical lengths e and the transverse lengths d of fire resisting material'witlr their meeting edges formed to interlock for the purpose set forth.

Montreal, 26th day of October, 1894,

' JAMES D. BAKER. 

